Rotary engine.



.No. 886,919. VPATENTED MAY 5, 1908. r. ASHLEY. ROTARY ENGINE.

APPLICATION FILED MAR. 22, 1906..

2 SHEETS-SHEET 1.

T, ASHLEY. ROTARY ENGINE.

APPLICATION IILEDMAR. 22, 1906.

PATBNTED MAY 5, 1 908.

2 sums-411E212.

wrga UNITED STATES PATENT OFFICE.

THOMAS ASHLEY, OF LOUTH, ENGLAND.

ROTARY ENGINE To all whom it may concern:

Be it known that I, THOMAS ASHLEY, a

- subject of the King of Great Britain and Ireland, and residing at 8Cemetery road, Louth, in the county of Lincoln, England, have inventedcertain new and useful Improvements in Rotary Engines and the Like, ofwhich the following is a specification.

This invention relates to rotary engines, or motors of the annularchamber type, actuated by steam or other fluids, and especially to thattype in which two or more abutments are provided in the piston accordingto the diameter of the cylinder, said abutments working in conjunctionwith a suitable form of cylinder thereby obtaining a cut off four ormore times during one revolution.

By the present invention there is an adjusting device for actuating asteamtight packing device at the side of the revolving piston, and thesliding abutments in the cylinder walls are provided with steam tightpackings which are also capable of being taken out of the cylinderthrough the side of the cylinder cover.

Referring now to the accompanying drawings, Figure 1 is a frontsectional elevation, and Fig. 2 a side elevation partly in section. Fig.3 is an enlarged detail.

In carrying the invention into effect in one mode, the cylinder, at, isprovided with two or more inlet ports, I), and corresponding exhaustports, 0, arranged at the top andbottom of the cylinder as shown.Revolving in cylinder, a, is a rotary piston, d, keyed'to the motorshaft, 6, this piston carries the moving abutments, f, which are securedby means of studs, each abutment carrying a packing piece, 9, held outagainst the cylinder walls by suitable springs.

Between the inlet and exhaust ports at the top and bottom of thecylinder, the sliding abutments, h are placed and are adapted to slidein and out against the action of aspring, so that they are always infirm contact with the surface of the rotary piston. The slidingabutments, h, are provided with metal strips, i, and springs, k, forsecuring a steamtight joint between the abutment and the walls of itscasing. An aperture, Z, is provided in the cover plate, m, for theremoval of the abutments from the cylinder, plugs, n, beingprovided forcovering up the apertures when the engine is 1n use.

It will be obvious from the position shown in Fig. 1 that the incomingsteam or fluid will Specification of Letters Patent.

Application filed March 22, 1906.

Patented May 5, 1908.

Serial No. 307,397.

so that four impulses are given to the piston at every revolution.

In order to make the cylinder steam-tight a metal plate or ring, 0, isplaced between the rotary piston, d, and cover plate, m. This plate,rlng or nut, o, is provided with a numer of pins, p, (as shown inFig. 1) 'which project through the cover plate, m, and carry on theirends a ring, g, this ring is adapted to be held between two plates, 7 s,the plate, 1*, screwing in and out on threaded bosst avery effectiveadjustment of greatfineness may be thus obtained between the face of theplate ring or nut, 0, and the piston, (1. Although I have described myinvention as applied to a single cylinder motor, it is to be understoodthat two or more motors may be compounded, the exhaust from the firstlowing and so on.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is i 1.. A cover plate for the cylinder of arotary motor comprising in combination a fixed recessed main plate, anauxiliary plate adapted to be moved to and from such main plate, pinsprojecting from the back of the auxiliary plate and through the fixedlate, a screw threaded boss projecting from t e back of the main plate,and a ring rotatable upon said boss engaging projecting heads upon thepins of the auxiliary plate.

2. A rotary motor of the annular chamber type comprising in combinationan annular chamber or cylinder, a piston adapted to rotate therein, aplurality of abutments on said piston to fit the cylinder steam tight, aplurality of steam tight sliding abutments mounted in recesses in thecylinder wall, a fixed cover plate for the cylinder, an auxiliary plateadapted to be moved to and from such plate, pins projecting from theback of the auxiliary plate and through the fixed plate, a screwthreaded boss projecting from the back of the main plate, and a ringrotatable upon said boss engaging projecting heads upon the pins of theauxiliary plate.

3. A rotary motor of the annular chamber type comprising in combinationan annular chamber or cylinder, a piston adapted to rotate therein, aplurality of abutments on said piston to fit the cylinder steamtight, aplurality of abutments in the cylinder wall, packing strips at the backof said abutments,

springs forlaterally expanding such packing strips, means for causingthe abutments to reciprocate relatively to the cylinder wall, a fixedcover plate for the cylinder, an auxiliary plate adapted to be moved toand from such plate, pins projecting from the back of the auxiliaryplate and through the fixed plate, a screw threaded boss projecting fromthe back of the main plate, and a ring rotatable upon said boss engagingprojecting heads upon the pins of the auxiliary plate 4. A rotary motorof the annular chamber type comprising in combination an annular chamberor cylinder, a piston adapted to rotate therein, a plurality ofabutments on said piston to fit the cylinder steamtight, a plurality ofabutments in the cylinder wall, springs at the back of said abutmentholes, extending transversely therethrough, packing strips in the endsof such holes, springs for laterally expanding such strips, means'fofieciprocating the abutments in the cylinder walls, a fixed coverplate for the cylinder, an auxiliary plate adapted to be moved to andfrom such plate, pins projecting from the back of the auxiliary plateand through the fixed plate, a screw threaded boss projecting from theback of the main plate and a ring rotatable upon said boss engagingprojecting heads upon the pins of the auxiliary plate.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS ASHLEY. Witnesses:

WALT. J. Woon,

ERNEST BENTEm

